Wing for flying-machines.



No. 693,943. I Patented Feb. 25, I902.

w. .1. BELL.

. WING 'FOB FLYING MACHINES.

(Applicatioia filed 4 1:. 2a. 1901.

(No Model.)

g-' a a Wiiiwsaa; 1722672207 9 y M UNrrEn STATES PATENT OFFICE.

lVALTER J. BELL, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO LEON F. MOSS, OF LOS ANGELES, CALIFORNIA.

WING FO'R-FLYING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 693,943, dated February 25, 1902.

Application filed April'23, 1901'. $eria1 No. 57,072. (No model.)

To ll wh m i m y c n rn: the wing being fitted with a suitable number Be it known that I, WALTER J. BELL, a citi of said shutters or check-valves, orsaid valves zen of the United States, residing at No. 104:6 may be indefinitely multiplied upon the net- West Thirty-seventh street, in the city of Los ting covering the entire surface of the wing. 5 Angeles, county of Los Angeles, State of Oali- The netE covers over the entire framework fornia, have invented a new and useful Imof the wing and iscom posed of linen or other provemeut in Wings and, Propellers for Flysuitable material with suitable mesh in order ing-Machines and Machines for AerialNavito reduce-to a minimum the air resistance on gation, of which the following is a specificathe upward and backward thrusts when the 10 tion. 5 wing is opened, as hereinafter described. My invention relates to an improvement in There may be used a net with a very large said wings and propellersto'wit, a system of mesh superimposed upon or interwoven with automatic check-valves or automatic air-shuta net witha small mesh, which will give adters to be attached to a winger propeller for ditional strength and support as a base for I 5 use on a flying-machine orother machine for the strips, as hereinafter described.

aerial navigation; and the objects of my in-' The valves'or shutters consist of strips of vention are to enable the said wing or propaper, parchment, celluloid, vellum rubber, peller to exert the maximum amount of presoiled linen, unvulcanized sheet-rubber, or sure upon the air in propelling the machine other suitable material running on the under 20 and its burden upward and forward and in side of the Wing from the portion of the frame sustaining it in the air with a minimum work nearest the body ormachine to which amount ofpressure on the backward strokes the wing is made fast at A, the end thereof, thereof. The automatic opening and closing by means of pivots of aluminium or other suitof the said check-valves or air-shutters by able material. 25 the upward thrusts of the wing or propeller X is the front side of the wing, and Y the and by the reverse motion thereof enables rear of the Wing.,- the Wing or propeller to exert the maximum The strips are fastened by being sewed or amount of force in upward and forward procemented theirentirelength on the front side, pulsion-that is, when its strokes are made on the lines shown as O, to the net, the rear 3o downward or backwardwith a minimum reside or opposite edge of each strip swinging verse-that is, downward and backward presloose or free, so that each strip will be pressed sure-When the wing or propeller makes the downward by the pressure of the air against necessary motions after having made one proit when the wing is on the upward thrust, as polling stroke in order to secure a properposhown by the dotted lines 13', Fig. 2, and. when 3 5 sition for another propelling stroke. I I attain the wing is on the downward thrust the presthese objects by the mechanism illustrated in sure of the air against the strips closes them the accompanying drawings, in whichagainst the netting, so that the stripsthus Figure 1 represents a plan view of a wing opening from and closing against thenetting lorpropeller fitted with a system of checkin the upward and downward thrusts of the 40 valves or air-shutters and supporting-net, and wing act like check-valves, and the free side Fig. 2 represents a vertical section of the of each strip overlapping the fastened edge wing or propeller on line D D. of the next strip closes the whole wing on the A represents the framework of the wing, downward thrust, making the passage of the which may be composed of bamboo or other air through it impossible, while on the up- 5 a5 material which will have the maximum ward thrust the valves instantly opening perstrength and the minimum weight. mit the free passage of the air through every B represents the check-valves or air-shutpart of the wing. ters, which in the form of wing or propeller What I claim as my invention, and desire shown in Fig. 1 may each run lengthwise of to secure by Letters Patent, is 1 :50 the wing to the beginning of the curved por- 1. The combination of a frame comprised tion or the tip thereof, the curved portion of of side and end members and intermediate bars, of a netting secured to and extending I ing over the frame at the upper side thereof,

over the frame at the upper side thereof, and and a plu'i'ality of overlapping Valves or shutovel'lapping valves or shutters hinged to the ters hinged at one side to the under side of under side of the frame and contacting in the frame and adapted to close against the 5 their closing position with the netting. I netting.

2. The combination of a transverselycurved frame comprisedof side andend nie'irlbers one of the end members being bowed to provide a curved tip, intermediate strength- 10 ening-bal's, a netting secured to and extend- WALTER J. BELL. [n s.] Witnesses GEO. P. PHIBBS, EMMETT H. WILSON. 

